5 papers
Robustness of the Cosmological Constant Damping Mechanism Through Matter Eras
Oleg Evnin, Victor Massart, Kevin Nguyen
A dynamical resolution to the cosmological constant fine-tuning problem has been previously put forward, based on a scalar-tensor gravitational theory possessing de Sitter attracto…
Slow scrambling in extremal BTZ and microstate geometries
Ben Craps, Marine De Clerck, Philip Hacker +2
Out-of-time-order correlators (OTOCs) that capture maximally chaotic properties of a black hole are determined by scattering processes near the horizon. This prompts the question t…
The Effective Action of Superrotation Modes
Kévin Nguyen, Jakob Salzer
Starting from an analysis of four-dimensional asymptotically flat gravity in first order formulation, we show that superrotation reparametrization modes are governed by an Alekseev…
Superluminal chaos after a quantum quench
Vijay Balasubramanian, Ben Craps, Marine De Clerck +1
Thermal states holographically dual to black holes in Einstein gravity display maximal Lyapunov growth as well as "butterfly effect cones". We study these effects in highly non-equ…
A Graceful Exit for the Cosmological Constant Damping Scenario
Oleg Evnin, Kévin Nguyen
We present a broad and simple class of scalar-tensor scenarios that successfully realize dynamical damping of the effective cosmological constant, therefore providing a viable dyna…